package BookTest;

public class C7Test {
    public static void main(String[] args) {
       C7Bird a = new C7Bird();
       C7Chicken b = new C7Chicken();
       if(a instanceof C7Bird){
           System.out.println("鸡是鸟的一种");
       }else{
           System.out.println("鸡不是是鸟的一种");
       }

    }
}
